UIO-66-(OH)₂-Modified Optical Fiber SPR Sensor for Boric Acid Concentration Detection

IF 4.3 2区综合性期刊 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Sensors Journal Pub Date : 2024-12-19 DOI:10.1109/JSEN.2024.3516013

Ziqiang Zhang;Chunlan Liu;Yabin Shao;Yong Wei;Puxi Ren;Yixiong Tang;Chao Guo;Zhihai Liu

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Abstract

It is important to detect whether the concentration of boric acid in industrial wastewater meets the discharge limit. Conventional chemical detection methods are complex, time-consuming, and difficult to operate. This article modifies the metal organic frameworks (MOFs) material UIO-66-(OH)2 on the surface of the gold film of the optical fiber SPR sensor, achieving specific detection of low concentration boric acid. The metallic-like properties of this material enhance the SPR phenomenon, increasing the refractive index sensitivity of the sensor to 4706.67 nm/RIU, which is 87% higher than before modification. In addition, a large number of hydroxyl and phenolic hydroxyl groups on the surface of UIO-66-(OH)2 material form coordination bonds to specifically adsorb boric acid, achieving specific detection of boric acid concentration with a sensitivity of 2.807 nm/lg(pM/mL) and a detection limit of 124.06 pM/mL. The boric acid concentration detection SPR sensor proposed in this article provides a new method for detecting microsubstances by material-modified optical fiber SPR sensor.

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用于硼酸浓度检测的UIO-66-(OH) 2 -改性光纤SPR传感器

工业废水中硼酸浓度是否达到排放限值的检测具有重要意义。传统的化学检测方法复杂、耗时、操作困难。本文对光纤SPR传感器金膜表面的金属有机骨架（mof）材料uuo -66-(OH)2进行改性，实现了对低浓度硼酸的特异性检测。该材料的类金属性质增强了SPR现象，使传感器的折射率灵敏度提高到4706.67 nm/RIU，比改性前提高了87%。此外，UIO-66-(OH)2材料表面的大量羟基和酚羟基形成配位键特异性吸附硼酸，实现了硼酸浓度的特异性检测，灵敏度为2.807 nm/lg(pM/mL)，检出限为124.06 pM/mL。本文提出的硼酸浓度检测SPR传感器为材料改性光纤SPR传感器检测微量物质提供了一种新方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Sensors Journal 工程技术-工程：电子与电气

CiteScore

7.70

自引率

14.00%

发文量

2058

审稿时长

5.2 months

期刊介绍： The fields of interest of the IEEE Sensors Journal are the theory, design , fabrication, manufacturing and applications of devices for sensing and transducing physical, chemical and biological phenomena, with emphasis on the electronics and physics aspect of sensors and integrated sensors-actuators. IEEE Sensors Journal deals with the following: -Sensor Phenomenology, Modelling, and Evaluation -Sensor Materials, Processing, and Fabrication -Chemical and Gas Sensors -Microfluidics and Biosensors -Optical Sensors -Physical Sensors: Temperature, Mechanical, Magnetic, and others -Acoustic and Ultrasonic Sensors -Sensor Packaging -Sensor Networks -Sensor Applications -Sensor Systems: Signals, Processing, and Interfaces -Actuators and Sensor Power Systems -Sensor Signal Processing for high precision and stability (amplification, filtering, linearization, modulation/demodulation) and under harsh conditions (EMC, radiation, humidity, temperature); energy consumption/harvesting -Sensor Data Processing (soft computing with sensor data, e.g., pattern recognition, machine learning, evolutionary computation; sensor data fusion, processing of wave e.g., electromagnetic and acoustic; and non-wave, e.g., chemical, gravity, particle, thermal, radiative and non-radiative sensor data, detection, estimation and classification based on sensor data) -Sensors in Industrial Practice